//
//  Book.h
//  base_m_06_内存管理
//
//  Created by China Dragon on 2023/1/26.
//

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

@interface Book : NSObject

@property float price;

-(id)initWithPrice:(float)price;

@end

NS_ASSUME_NONNULL_END
